Subscribe to Our Youtube Channel
Related Manuals for Elektrogas VML Series
Summary of Contents for Elektrogas VML Series
- Page 1 Safety solenoid valves for gas Slow opening and fast closing type DN10 … DN80 elektrogas.com EE162 -1208...
-
Page 2: Table Of Contents
ELEKTROGAS – TECHNICAL MANUAL Safety solenoid valves for gas Slow opening and fast closing type Contents Description ………………………………………….. 2 Features …………………………………………….. 2 Functioning and application ………………………. Special versions and optionals …………………… 4 Technical specifications …………………………… 4 Gas flow chart (pressure drop) …………………… 6 Ordering information ………………………………. -
Page 3: Functioning And Application
ELEKTROGAS – TECHNICAL MANUAL Functioning and application The VML type valve is a safety shutting device using auxiliary power supply. When it is de-energized, the spring pushes on the seal disc, keeping the gas passage closed. Now, the inlet chamber is under the gas line pressure, and it forces on the disc too, improving the seal. -
Page 4: Special Versions And Optionals
ELEKTROGAS – TECHNICAL MANUAL Special versions and optionals The sizes 1”¼, 1”½ and 2” can be provided with G1/4 gauges also in the outlet chamber. A closed position indicator micro-switch (CPI) can be installed. Models from DN65 to DN80 are provided with G1/8 connection on the bottom for these facilities (on request from 3/4"... - Page 5 ELEKTROGAS – TECHNICAL MANUAL Fig.3 Tab. 2 Material and Power Flow factor Overall dimensions Weight connections consumption @230VAC [m³/h] [mm] [Kg] AlSi Rp 3/8 Rp 1/2 Rp 3/4 Rp 1 12,0 Rp 11/4 45/180 ( 20,0 Rp 11/2 45/180 (...
-
Page 6: Gas Flow Chart (Pressure Drop)
ELEKTROGAS – TECHNICAL MANUAL Gas flow chart (Pressure drop) Fig. 4 Formula of conversion from air to other gases Tab. 3 Gas type Specific gravity ρ ρ ⋅ [Kg/m³] 1,25 1,00 Natural gas 0,80 1,25 Town gas 0,57 1,48 2,08 0,77 15°C, 1013 mbar, dry... - Page 7 ELEKTROGAS – TECHNICAL MANUAL When the flow read on the diagram is referred to operating pressure instead of standard conditions, the pressure drop ∆p read on the diagram must be multiplied for the factor: (1+ relative pressure in bar) Example: In the 2”...
-
Page 8: Ordering Information
ELEKTROGAS – TECHNICAL MANUAL Ordering information Tab.4 Material and Connections 230V 110V AlSi 200 mbar 360 mbar 200 mbar 360 mbar 200 mbar Rp 3/8 VML0 VML0.B VML02.C Rp 1/2 VML1 VML1.B VML12.C Rp 3/4 VML2 VML2.B VML22.C Rp 1 VML3 VML3.B... -
Page 9: Standards And Approvals
ELEKTROGAS – TECHNICAL MANUAL Standards and approvals The valve design meets current European approval requirements regarding safety shut-off functions on gaseous fuels. These products conform with the Gas Appliances Directive (90/396/EEC) and the certification has been issued by the notified body: GASTEC CERTIFICATION B.V. -
Page 10: Installation, Adjustment And Servicing
ELEKTROGAS – TECHNICAL MANUAL Installation, adjustment and servicing To assure a proper and safe operation, as well as a long life of the valve, the installation procedure and a periodical servicing are very important topics and the following instructions should be always fulfilled. - Page 11 ELEKTROGAS – TECHNICAL MANUAL ELECTRICAL CONNECTION (IEC 730-1) Valve is provided with terminal box or standard plug (see tab. 4) for the electrical connections. To connect the valve do the following: Terminal box version: - Using a screwdriver remove the box cover.
- Page 12 ELEKTROGAS – TECHNICAL MANUAL FAST STROKE ADJUSTMENT (Vstart) Fast flow section may be adjusted: Remove plastic cap. Using an hexagonal wrench, turn the outer screw clockwise to decrease or counter-clockwise to increase the initial fast stroke. When adjustment is completed, screw back the plastic cap.
- Page 13 ELEKTROGAS – TECHNICAL MANUAL EXTERNAL INSPECTION Turn off all power before servicing any part of the system. Check the conditions of the plug/box gasket. If gasket is deteriorated, replace it with a new one. Check the electrical connections are clean, dry and correctly tightened.
Need help?
Do you have a question about the VML Series and is the answer not in the manual?
Questions and answers